Standard Neo Rb25det,

[Forged]

A quick update on the tune. On CRD's dyno the car made 260rwkw @16psi and 288rwkw @19psi. boost above 19psi didnt give significant gains, thus 19psi is the peak efficient at the moment.

that was achieved with no cams and stock internals. what would you do next to get to 300rwkw? mind you any further modifications are expensive i.e 1k for head gaskets(more boost) and 2k for cams.

Edited March 12, 2007 by Forged

[R31Nismoid]

Well thats a question only you can answer dude.

It you car, and your money.

[klh6686]

Check the vid ---> http://s180127837.onlinehome.us/1_5/1/R/8/dyno+587HPweb.WMV <-------

98'+ NEO Rb25det

-coustom exhaust manifold, ceramic coated

-coustom down pipe

-Presicion T67 turbo with polished front and ceramic coated rear

-Turbonetics waste gate

-Presicion 850cc injectors

-greddy intake manifold

-83mm infinity throttle

-Wiseco 87mm pistons

-Crower Rods

-ARP head studs

-Power enterprise head gasket

-N1 oil pump

-ACT Clutch

-Microtech Engine management

587 at the wheels, Go for broke

Edited March 3, 2007 by klh6686

[Forged]

let me explain a little better. obviously one would always want to make more power. im ready to take one extra step to achieve the magic 300rwkw. but its not like money is not an issue here otherwise i would be modifying a r34 gtr not a gtt.

so 3 options i can think of:

$1.5k for headgaskets to run more boost, but not sure if more boost would give me the extra 12rwkw as we already tried raising a few psi on the dyno and it didnt reciprocate.

$2k+ for cams. proven method but then the car will need a PFC retune and adding cost of labour it would be close to $3k in total which is a big ask for me at the moment.

an aftermarket intake plenum like this http://www.hypertune.net/ is around $2200 installed and would normally pick up 15rwkw, however i will need new intercooler pipes and also contemplate if i should do larger throttle body meanwhile.

any suggestions?

cheers

Edited March 3, 2007 by Forged

[Forged]

any suggestions for the above post?

[Sammie]

im making 380hp on standard internals with a internal gate gt30, not sure if thats good however im very happy with the result

[Adriano]

is that with a neo?

[infected flow]

let me explain a little better. obviously one would always want to make more power. im ready to take one extra step to achieve the magic 300rwkw. but its not like money is not an issue here otherwise i would be modifying a r34 gtr not a gtt.

so 3 options i can think of:

$1.5k for headgaskets to run more boost, but not sure if more boost would give me the extra 12rwkw as we already tried raising a few psi on the dyno and it didnt reciprocate.

$2k+ for cams. proven method but then the car will need a PFC retune and adding cost of labour it would be close to $3k in total which is a big ask for me at the moment.

an aftermarket intake plenum like this http://www.hypertune.net/ is around $2200 installed and would normally pick up 15rwkw, however i will need new intercooler pipes and also contemplate if i should do larger throttle body meanwhile.

any suggestions?

cheers

omg where do u get your prices from ..geez!

ok head gasket $300 tomei!

cams $1000 with cam gear comes together - tomei!

and the plenum u dont need a hyper tune one get a greddy one $1200.. also you will need injectors if your changing the plenum

u will definately need an oil cooler and radiator upgrade!

ok fuel up to you but if u want more power in the long run i suggest twin feed rail ( u dont want cylinder 6 leaning out! )

but if your going to stick too 300rwkw then just get cams with your current steup and u should be a happy chap!

cheers!

[Roy]

The prices are installed,

[satanic]

$1000 to install cams? WOAH!

Anyways - I think the question being asked here to the "experienced" NEO owners is not the way to go about it. None of us got our cars new from Nissan so all our engines were/are at different states anyway - luck of the draw!

I've been having major discussions about the NEOs with a few reputable people and it has been concluded that anything about 270-280 mark on the street is "impractical". Response is what you want from a street car; and the bigger your RWKW rating, the laggier your car will be = less responsive.

Set YOURSELF a goal; not what others tell you to aim for. Make sure you have the budget for it and then do it.

BTW; worrying about your engine blowing up on the dyno is normal - happens to everyone

[infected flow]

The prices are installed,

lol 2k + for cams installed i dont know where u go but im sure you have been bent over and shafted...

lets say 1k for cams so think its going to cost another 1k to install them...hhmmmm

and head gasket 1.5k when just alone the head gasket cost 300 so u wanna pay 1.2k to install it geez roy u should really shop around....

and satanic- explain impractical pls ...and 300rwkw isnt laggy hey i got 300 with a 2835pro s and there not laggy at all!..hhhmmm and shonen i heard he got 300 with the 3037 thats not laggy ....hmm

cheers

[Forged]

lol 2k + for cams installed i dont know where u go but im sure you have been bent over and shafted...

lets say 1k for cams so think its going to cost another 1k to install them...hhmmmm

and head gasket 1.5k when just alone the head gasket cost 300 so u wanna pay 1.2k to install it geez roy u should really shop around....

and satanic- explain impractical pls ...and 300rwkw isnt laggy hey i got 300 with a 2835pro s and there not laggy at all!..hhhmmm and shonen i heard he got 300 with the 3037 thats not laggy ....hmm

cheers

didnt know this thread is back and live again. ok, all above prices are "first phone call" quotes from reputable workshops so im sure they will be cheaper after negotiation.

2k+ for cams includes some sort of porting job for the head, i remember they mentioned. At 288rwkw my td06-25g does feel laggy (full boost not until 4000rpm) this is one problem im trying to solve without having to change the turbo (cams being the obvious solution at a cost).

cheers

Edited March 12, 2007 by Forged

[Forged]

$1000 to install cams? WOAH!

I've been having major discussions about the NEOs with a few reputable people and it has been concluded that anything about 270-280 mark on the street is "impractical". ; and the bigger your RWKW rating, the laggier your car will be = less responsive.

Set YOURSELF a goal; not what others tell you to aim for. Make sure you have the budget for it and then do it.

BTW; worrying about your engine blowing up on the dyno is normal - happens to everyone

as mentioned on my previous posts my goal is 300rwkw. i know 288rwkw is enough for many people and it is "impractical" on the street, but i just want to chase 300rwkw out of the NEO then i will be content.

i also would like to make the turbo to hit full boost earlier, as you mentioned: response is what you want from a street car, so im trying to find that one "cost-effective" mod that can get me the extra 12rwkw whilst giving me better response.

cheers

Edited March 12, 2007 by Forged

[Spook's_Skyline]

sounds like you are all over the shop mate

you want 300rwkw, u want your engine not to go bang, u want to not spend too much money on your car

really, u cant have your cake and eat it

u have to decide what you want more and go for that, big power, longer life, to spend less money

we cant decide that for you

[Pauly33GTS-t]

yeah you can, just tell him what to do and hell do it, obviously since hes asking and money talk doesnt seem to be a problem but he wants to save it... confusing no?

[Sydneykid]

For 300 rwkw I don't think it is necessary to decompress it (thick head gasket). So I would go for the Poncams, 260 degrees for a Neo. They gave us ~20 rwkw average power increase from 4,500 rpm to 7,500 rpm. The longer duration will also decrease the dynamic compression ratio, hence lessening the need for a thick head gasket. Plus the cams lessened the restrictions to airflow, so we made more power at lower boost, also further lessening the need for a thick head gasket. The lower boost/dynamic compression enabled us to advance the ignition noticeably for faster boost build and more response.

Cams were a win, win, win, win scenario.

cheers

[Forged]

sounds like you are all over the shop mate

you want 300rwkw, u want your engine not to go bang, u want to not spend too much money on your car

really, u cant have your cake and eat it

u have to decide what you want more and go for that, big power, longer life, to spend less money

we cant decide that for you

who says u cant have 300rwkw and a engine that can last at that power level? no i have already spent a lot of money on my car to make 288rwkw. iwas simply just looking for one more mod to reach 300. i didnt think spending another $2k to get cams is a cost effective way to achieve the mere extra 10-15rwkw that i was looking for but Sydneykid just gave the solution to my question. so there you go, i can have 300rwkw with a engine that can last and that would give me improved response just by installing cams. this is the last mod for the car and i CAN have my cake and eat it!

cheers

[Forged]

For 300 rwkw I don't think it is necessary to decompress it (thick head gasket). So I would go for the Poncams, 260 degrees for a Neo. They gave us ~20 rwkw average power increase from 4,500 rpm to 7,500 rpm. The longer duration will also decrease the dynamic compression ratio, hence lessening the need for a thick head gasket. Plus the cams lessened the restrictions to airflow, so we made more power at lower boost, also further lessening the need for a thick head gasket. The lower boost/dynamic compression enabled us to advance the ignition noticeably for faster boost build and more response.

Cams were a win, win, win, win scenario.

cheers

Thank you Sydneykid, this is the one constructive recommendation I was looking for. Did not know these associated benefits with cams (lower dynamic compression ratio and etc.) but it seems to answer all of my questions. I will give cams a try and see if it does the magic on the NEO.

Cheers

[Blitz_boy]

How did you go with the cams. Which ones did you use and what power did you get?

[Sammie]

i know my motor isnt a neo however my r33 rb25 made 380hp on a stock engine running a ems stinger at 18 psi